Winding-machine



J. C. ANDERSON. WINDING MACHINE- APPLICATION FILED APR. 23. 1920.

1 35 7,434, Patented Nov. 2, I920.

UNITED S ATES ATENT OFFICE;

JAMES C. ANDERSON, OF EAST ORANGE, NEW JERSEY, ASSIGNOR TO VARLEY'DUPLI] MAGNET COMPANY, A CORPORATION OF NEW JERSEY.

WINDING-MACHINE.

Specification 01 Letters Patent. Patented Nov. 2, 1920.

Application filed April 23, 1920. Serial N0. 375,990.

To all whom it may concern:

' Be it known that I, JAMES C. ANDERSON, a'

citizen of the United States, residing at East Oran e, in the county ofEssex and State of New ersey, have invented certain new and usefulImprovements in Winding-Machines, of which the following is a full,clear, and exact description.

This invention relates to machines for Winding strand material and hasspecial reference to machines of the character described in my pendingapplication, filed August 13th 1919, Serial No. 317,166. The machinereferred to in said application is adapted more especially for thewinding of copper wire into electrical helices, the wire of each helixbeing wound in superposed layers with an intervening layer or layers ofsheet material, such as paper, separating the layers of'wire' from eachother. A plurality of these helices are wound simultaneously upon asingle spindle, the various wires for each helix being directed tothe-spindle by suitable guiding rolls which are mounted successivelyupon a reciprocating rod. arranged parallel to the spindle, the movementof the rod and of the various guides carried therby, causing the wire tobe spirally wound and a new layer to be started at each reversalof'movement. It has been found that at the ends of the layers where thedirection of the guides is reversed, it generally happens that the pitchof the winding fails to reverse properly which results in a crowding ofthe wire at the beginning of the new layer. This result is largely dueto the fact that, the

run of the strand from the guide to the spindle is inclined ahead of thepitch of the winding during the formation of the layer and at thereversal this forward inclination in'one direction must be convertedinto a forward inclination in the opposite direction necessitating extramovement of the guides. The object of the present invention is to insurea perfect reversal of the pitch at the end of each layer and it isaccomplished by imparting to the reciprocating ed which carries theguides, an extra movejentat the moment the reversal takes place hatmomentarily the pitch of the windis increased causing the wire toinstantly and positively reverse its direction and start the new layerwithout any crowding of the convolutions. In the machine described in bthe pending application the reciprocating rod upon which the guidesaremounted, is moved back and forth by a rotating cylindrical cam having atwo direction endless track in its cylindrical surface. In the presplaceso that the second movement is added to the movement caused by the camtrack, to produce a momentary and more rapid movement of the guide rodat the beginning of each layer.

The invention will be described in detail in connection with theaccompanying drawin in which: igure 1 is a plan of the cam, traverse rodand spindle of a winding machine.

Fig. 2 is a cross section on line a: a: of Fig. 1.

Fig. 3 is a longitudinal section of the controlling cam.

Fig. 4 is a detail.

Fig. 5 is a development in plan of the surface of the cam.

Fig. 6 is a diagrammatic illustration of the relative "positions of thestrand at the moment of reversal.

Referring to the drawing, 1 indicates the winding spindle upon which aresupposed to be wound simultaneouslya plurality of coils 2, only two ofwhich are shown. 3 is a traverse rod upon which are fixed a plurality ofhubs 4', each of which carries two guide rolls 5-6 from which the wire 7to be wound is led to the rotating spindle. The traverse rod is mountedin suitable bearings 8 one of which is shown, and is adapted toreciprocate slowly back and forth and thus wind the wire '7 spirally andform the successive superposed layers of winding'in the respective coils2. In order to reciprocate the traverse rod 3 it carries at one end ashoe 9 in which is mounted on the end of a stud 9 a block lO whichenters a cam groove 11 formed in the surface of a cylindrical cam 12.The cam 12 comprises a shell to-the outer end of which is fixed a earwheel 13 the latter being pinned to a s aft 14, mounted to'turn in afixed bearing 15 secured to a frame member 16. The inner end of shaft 14projects beyond the bearing, and is fitted with a collar 17 and is drawncontinuously toward the frame 16 by a Spring 18 interposed between thecollar and the bearing 15. The cam groove 11 is an block 10 traversesthis groove and'as the cam is driven through its gear 13, the shoe,

together with the traverse rod 3 is caused to move first in onedirection and then the other, the reversal taking place when the block10 encounters thebend in the groove 11. This groove 11 provides for theregular and uniform reciprocation of the traverse rod.

Adjacent to the inner end of the camand bolted to the face of the frame16 is a bracket 19 carryinga small roller 20 bearing against the innerend of the cam cylinder 12, the cam being held against the roller by thespring 18, the end of the cam thus forming a circular face upon whichthe roller runs. This track, at two diametrical points is provided withreversed shoulders 21 and 22 respectively. During the rotation of thecam these shoulders successively come into contact with the unyieldingroller 20 and the cam .is forced to move in an axial direction adistance equal to the height of the shoulder, the movement in onedirection being against spring 18 and in the other direction causeddirectly by the spring. This extra movement of the cam occurs the momentthe block 10 changes its direction of movement in the cam groove and therate and duration of the axial movement depends upon the inclination andlength of the shoulder, which may be one or two degrees of thecircumference of the cam. The shoulders 21 and 22 are so arranged withrespect to the cam groove 11 that when the change of direction isimparted to the block 10, the axial movement of the cam augments themove ment of the block. That is to say, the traverse rod 3 at thisinstant is accelerated.

This causes the run of the wires 7 from the lower guide roll 5 to thespindle, to move to the oppositely inclined position more rapidly thanwould be the case if the cam were not given this extra movement. Theresult of the increased rapidity of movement of the strand is to insurethe immediate reversal in the pitch of the winding and the' commencementof the new layer without any crowding of the turns at the beginning ofthe new layer. 2

In Fig. 6 the angle through which theleading strand is swung solely bythe bend in the cam track 11, is indicated by ail) 0.

But as the str and runs aheadpf the pitch slightly as indlcated by at bd, it is necessary in reversing to swing the strand through vthe.

angle 03 b 6, so as to cover a b c+d b a-l-c b c. The rapid and extendedswing of the wire leads from one incline to the other prevents thepiling up of the convolutions by momentarily increasing the pitch of thefirst few turns. The extra-movement imparted byroller 20 is representedby d b a-l-c b e.

Obviously the means for imparting the movement of translation to the cam12 may .be modified within considerable limits without departing fromthe invention, .one obvious modification being to mount the roller 20upon the cam and provide a circular track with the shoulders 21 and 22upon the fixed frame. ,7

I claim:

1. In a machine for winding strand mate rial, the combination of awinding spindle, strand guides having a movement with respect to thespindle to form superposed laymovement at v of the ers of winding uponthe spindle and means for momentarily altering the normal rapidity ofsaid movement at each reversal in direction thereof. f i

2. In a machine for winding strand material, the combination of awinding spindle,

strand guides having a movement with respect to the spindle to formsuperposed layers of winding upon the spindle and means for momentarilyincreasing the normal rapidity of said movement at each reversal indirection thereof.

3. In a machine for winding strand material, the combination of awinding spindle, strand guides having a reciprocating movement to formsuperposed layers of winding upon the spindle and means for momenta.-rily increasing the normal rapidity of said 7 -each reversal indirection thereof.

4;. In a machine for winding strand material, the combination of'awinding spindle,

a reciprocating rod for'directing the strands to-form*layers upon thespindle and means for increasing the normal rapidity of move- 1 ment ofthe god momentarily at thebegin-v ning of each traverse.

5. In a machinefor winding" strand material, the combination of awinding spindle,

means forwinding the material spirally in superposed layers upon thespindle and means for momentarily increasing the pitch winding at thebeginning of ,each layer.

6. In a machine for winding strand material, the combination of awinding spindle, a

layer forming guide and a cam for imparting a reciprocatory movement tothe guide,

said cam having two movements, one rotary and the other of translation.

7. In a machine for winding strand material, the combination of awinding spindle, a layer forming guide and a cam for imparting areciprocatory movement to the guide,

said cam having two movements, one continuously rotary and the other oftranslation and momentary.

8. In a machine for winding strand material, the combination of awinding spindle, a layer forming guide, a cam controlling the moyementsof the guide, said cam havinga track adapted to reciprocate the guideand 9. In a machine for windingstrand material, thecombination of aspindle, a layer forming guide, a cylindrical rotary cam having a camtrack in itscy1indrical surface adapted to cause the reciprocation ofthe guide and means" for periodically moving the cam in an axialdirection to augment the efiect of the track upon the guide.

my Signature.

10. In a machine for winding strand ma 7 terial, the combination of awinding spindle, layer forming guide, a cylindrical rotary cam having acam track in its cylindrical surface adapted to cause the reciprocationof the guide and means for moving the cam in anaxial direction at eachreversal of direction of the guide to augment the efie ct of the trackupon the "de.

In Witness whereof, hereunto subscribe JAMES cl ANDERSON.

